We have several 3PAR 7200 models and after requesting an upgrade we are facing the same dilemma. Upgrade to 3.2.1 MU5 or 3.2.2 MU3?
Initially we wanted to upgrade because of the ATS bug, but in the release notes for 3.2.2 MU3 I also found another issue which makes me prefer an upgrade to 3.2.2 MU3 (see below).
Can anyone share their experiences with 3.2.2 MU3?
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HPE 3PAR StoreServ Storage – ESX 6.0x servers freeze and lose paths to the array when doing rescans
Description
ESX servers running 6.0x connected to a 3PAR array could experience path issues leading to freezing VMs when a lun rescan has been initiated.
In ESXi 6.0 Update 2, a change to the PDL response behavior can result in this condition blocking additional IO operations, resulting in the aborts and timeouts described in the Symptoms section. For more information, see General Storage Issues section in the ESXi 6.0 Update 2 Release Notes.
Scope
This issue affects VMware hosts running VMware 6.0 or later connecting to HPE 3PAR StoreServ arrays running all versions of HPE 3PAR OS 3.2.2 or 3.2.1.
Resolution
HPE has released HPE 3PAR OS 3.2.2 MU3 with enhancements to address this behavior of the hosts to minimize the likelihood of experiencing this issue (Refer to KB article:
http://kb.vmware.com/kb/2133286)